Daily Archives: August 16, 2016

C Programming Tutorial – 10 – define multiple variable at the same time :

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Code:
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#include <stdio.h>
#include <stdlib.h>

int main()
{

float aa,bb,cc, balance;                                          // we can define multiple variable at the same time
aa=bb=cc=100.00;                                               // we can give a value to multiple variable at the same time
printf(“aa=%f , bb=%f ,cc=%f\n”, aa,bb,cc);

return 0;

}

C Programming Tutorial – 9 – int or float ? :

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Note:

  • // int just shows the integer part of the number
  • // float shows the integer and decimal part of the number:

Code:
—————————

#include <stdio.h>
#include <stdlib.h>

int main()
{

int a=86;                                            // Int just shows the integer part of the number
int b=21;
printf(“%d\n”, a/b);
float c=86.0;                                     // float shows the integer and decimal part of the number
float d=21.0;
printf(“%f\n”, c/d);

return 0;

}

C Programming Tutorial – 8 – Get data from keyboard scanf():

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Note:

  • // scanf() :  get data from keyboard or user.
  • // Use & before all of the variables, except Array variables.

Code:
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#include <stdio.h>
#include <stdlib.h>

int main()
{

char firstname[20];
char lovename[20];
int NumberOfBaby;
printf(“What is your name?\a\n”);
scanf(“%s”,firstname);                                                           // scanf get data from keyboard or user
printf(“What is your love name?\a\n”);
scanf(“%s”,lovename);
printf(“How many baby you will have?\a\n”);
scanf(“%d”, &NumberOfBaby);                     // Use & before all of the variables except Array variables.
printf(“%s and %s are in love. They will have %d babies\n”, firstname,lovename ,NumberOfBaby );

return 0;

}

C Programming Tutorial – 7 – Generate a header file and use it:

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Note:

  • //make sajjadinfo.h header file and use content of code 1.
  • add #include “sajjadinfo.h”    to your code.
  • “” means just look at current folder.

 

Code 1:    sajjadinfo.h
—————————

#define MYNAME “SB”
#define AGE 33

 

Code 2:
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#include <stdio.h>
#include <stdlib.h>

#include “sajjadinfo.h”     // we create a Header file . “” means just look at current folder.

int main()
{

int HalfOfMyAge=(AGE/2) ;                              // we used sajjadinfo.h file constant data (AGE)
printf(“Half of age of %s is %d \n”, MYNAME , HalfOfMyAge);  // we used sajjadinfo.h file constant data (MYNAME)

return 0;

}

C Programming Tutorial – 6 – replace a string with other sting – strcpy():

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Note:

  • // replace a string with other sting:
    strcpy(food,”bacon”);

Code:
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#include <stdio.h>
#include <stdlib.h>

int main()
{

char food[]=”tuna”;
printf(“The best food is %s\n”, food);
strcpy(food,”bacon”);                 // replace a string with other sting
printf(“The best food is %s\n”, food);

return 0;

}